"Going on Letterman is like going off the high dive. It's exhilarating, but after a while it wasn't the kind of thrill I enjoyed"

This quote by Lynda Barry is a metaphor comparing the experience of going on the Late Show with David Letterman to leaping off a high dive. The high dive is an exhilarating experience, but it can end up being overwhelming and not satisfying after a while. Likewise, going on Letterman can be an exciting experience, but it can become excessive after a while. Barry is suggesting that the adventure of going on Letterman can be short-term and that it is not something that she takes pleasure in for an extended period of time. This quote is a tip that although something can be amazing and thrilling, it can also become overwhelming and not pleasurable after a while. It is necessary to acknowledge when something is no longer satisfying and to take an action back.